src/frontends/qt4/GuiApplication.cpp

   1 /**
   2  * \file GuiApplication.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author unknown
   7  * \author John Levon
   8  * \author Abdelrazak Younes
   9  *
  10  * Full author contact details are available in file CREDITS.
  11  */
  12
  13 #include <config.h>
  14
  15 #include "GuiApplication.h"
  16
  17 #include "qt_helpers.h"
  18 #include "GuiImage.h"
  19 #include "GuiView.h"
  20
  21 #include "frontends/alert.h"
  22 #include "frontends/Application.h"
  23 #include "frontends/NoGuiFontLoader.h"
  24 #include "frontends/NoGuiFontMetrics.h"
  25 #include "frontends/FontLoader.h"
  26 #include "frontends/FontMetrics.h"
  27
  28 #include "support/ExceptionMessage.h"
  29 #include "support/FileName.h"
  30 #include "support/lstrings.h"
  31 #include "support/os.h"
  32 #include "support/Package.h"
  33
  34 #include "BufferList.h"
  35 #include "BufferView.h"
  36 #include "debug.h"
  37 #include "Font.h"
  38 #include "FuncRequest.h"
  39 #include "gettext.h"
  40 #include "LyX.h"
  41 #include "LyXFunc.h"
  42 #include "LyXRC.h"
  43 #include "version.h"
  44
  45 #include <QApplication>
  46 #include <QClipboard>
  47 #include <QEventLoop>
  48 #include <QFileOpenEvent>
  49 #include <QLocale>
  50 #include <QLibraryInfo>
  51 #include <QPixmapCache>
  52 #include <QRegExp>
  53 #include <QSessionManager>
  54 #include <QSocketNotifier>
  55 #include <QTextCodec>
  56 #include <QTimer>
  57 #include <QTranslator>
  58 #include <QWidget>
  59
  60 #ifdef Q_WS_X11
  61 #include <X11/Xatom.h>
  62 #include <X11/Xlib.h>
  63 #undef CursorShape
  64 #undef None
  65 #endif
  66
  67 #include <boost/bind.hpp>
  68
  69 #include <exception>
  70
  71 using std::endl;
  72 using std::map;
  73 using std::string;
  74 using std::vector;
  75
  76
  77 namespace lyx {
  78
  79 frontend::Application * createApplication(int & argc, char * argv[])
  80 {
  81         return new frontend::GuiApplication(argc, argv);
  82 }
  83
  84
  85 namespace frontend {
  86
  87 class SocketNotifier : public QSocketNotifier
  88 {
  89 public:
  90         /// connect a connection notification from the LyXServerSocket
  91         SocketNotifier(QObject * parent, int fd, Application::SocketCallback func)
  92                 : QSocketNotifier(fd, QSocketNotifier::Read, parent), func_(func)
  93         {}
  94
  95 public:
  96         /// The callback function
  97         Application::SocketCallback func_;
  98 };
  99
 100
 101 ////////////////////////////////////////////////////////////////////////
 102 // Mac specific stuff goes here...
 103
 104 class MenuTranslator : public QTranslator
 105 {
 106 public:
 107         MenuTranslator(QObject * parent)
 108                 : QTranslator(parent)
 109         {}
 110
 111         QString translate(const char * /*context*/,
 112           const char * sourceText,
 113           const char * /*comment*/ = 0)
 114         {
 115                 string const s = sourceText;
 116                 if (s == N_("About %1") || s == N_("Preferences")
 117                                 || s == N_("Reconfigure") || s == N_("Quit %1"))
 118                         return qt_(s);
 119                 else
 120                         return QString();
 121         }
 122 };
 123
 124
 125 ///////////////////////////////////////////////////////////////
 126 // You can find more platform specific stuff
 127 // at the end of this file...
 128 ///////////////////////////////////////////////////////////////
 129
 130
 131 using support::FileName;
 132
 133 GuiApplication * guiApp;
 134
 135
 136 GuiApplication::GuiApplication(int & argc, char ** argv)
 137         : QApplication(argc, argv), Application(), current_view_(0)
 138 {
 139         QString app_name = "LyX";
 140         QCoreApplication::setOrganizationName(app_name);
 141         QCoreApplication::setOrganizationDomain("lyx.org");
 142         QCoreApplication::setApplicationName(app_name + "-" + lyx_version);
 143
 144         // Qt bug? setQuitOnLastWindowClosed(true); does not work
 145         setQuitOnLastWindowClosed(false);
 146
 147 #ifdef Q_WS_X11
 148         // doubleClickInterval() is 400 ms on X11 which is just too long.
 149         // On Windows and Mac OS X, the operating system's value is used.
 150         // On Microsoft Windows, calling this function sets the double
 151         // click interval for all applications. So we don't!
 152         QApplication::setDoubleClickInterval(300);
 153 #endif
 154
 155         // install translation file for Qt built-in dialogs
 156         QString language_name = QString("qt_") + QLocale::system().name();
 157
 158         // language_name can be short (e.g. qt_zh) or long (e.g. qt_zh_CN).
 159         // Short-named translator can be loaded from a long name, but not the
 160         // opposite. Therefore, long name should be used without truncation.
 161         // c.f. http://doc.trolltech.com/4.1/qtranslator.html#load
 162         if (qt_trans_.load(language_name,
 163                 QLibraryInfo::location(QLibraryInfo::TranslationsPath)))
 164         {
 165                 installTranslator(&qt_trans_);
 166                 // even if the language calls for RtL, don't do that
 167                 setLayoutDirection(Qt::LeftToRight);
 168                 LYXERR(Debug::GUI, "Successfully installed Qt translations for locale "
 169                         << fromqstr(language_name));
 170         } else
 171                 LYXERR(Debug::GUI, "Could not find  Qt translations for locale "
 172                         << fromqstr(language_name));
 173
 174 #ifdef Q_WS_MACX
 175         // This allows to translate the strings that appear in the LyX menu.
 176         addMenuTranslator();
 177 #endif
 178
 179         using namespace lyx::graphics;
 180
 181         Image::newImage = boost::bind(&GuiImage::newImage);
 182         Image::loadableFormats = boost::bind(&GuiImage::loadableFormats);
 183
 184         // needs to be done before reading lyxrc
 185         QWidget w;
 186         lyxrc.dpi = (w.logicalDpiX() + w.logicalDpiY()) / 2;
 187
 188         guiApp = this;
 189
 190         // Set the cache to 5120 kilobytes which corresponds to screen size of
 191         // 1280 by 1024 pixels with a color depth of 32 bits.
 192         QPixmapCache::setCacheLimit(5120);
 193
 194         // Initialize RC Fonts
 195         if (lyxrc.roman_font_name.empty())
 196                 lyxrc.roman_font_name = fromqstr(romanFontName());
 197
 198         if (lyxrc.sans_font_name.empty())
 199                 lyxrc.sans_font_name = fromqstr(sansFontName());
 200
 201         if (lyxrc.typewriter_font_name.empty())
 202                 lyxrc.typewriter_font_name = fromqstr(typewriterFontName());
 203 }
 204
 205
 206 GuiApplication::~GuiApplication()
 207 {
 208         socket_notifiers_.clear();
 209 }
 210
 211
 212 void GuiApplication::resetGui()
 213 {
 214         map<int, GuiView *>::iterator it;
 215         for (it = views_.begin(); it != views_.end(); ++it)
 216                 it->second->resetDialogs();
 217 }
 218
 219
 220 static void updateIds(map<int, GuiView *> const & stdmap, vector<int> & ids)
 221 {
 222         ids.clear();
 223         map<int, GuiView *>::const_iterator it;
 224         for (it = stdmap.begin(); it != stdmap.end(); ++it)
 225                 ids.push_back(it->first);
 226 }
 227
 228
 229 void GuiApplication::createView(string const & geometry_arg)
 230 {
 231         updateIds(views_, view_ids_);
 232         int id = 0;
 233         while (views_.find(id) != views_.end())
 234                 id++;
 235         views_[id] = new GuiView(id);
 236         updateIds(views_, view_ids_);
 237
 238         GuiView * view  = views_[id];
 239         theLyXFunc().setLyXView(view);
 240
 241         view->show();
 242         if (!geometry_arg.empty()) {
 243 #ifdef Q_WS_WIN
 244                 int x, y;
 245                 int w, h;
 246                 QRegExp re( "[=]*(?:([0-9]+)[xX]([0-9]+)){0,1}[ ]*(?:([+-][0-9]*)([+-][0-9]*)){0,1}" );
 247                 re.indexIn(toqstr(geometry_arg.c_str()));
 248                 w = re.cap(1).toInt();
 249                 h = re.cap(2).toInt();
 250                 x = re.cap(3).toInt();
 251                 y = re.cap(4).toInt();
 252                 view->setGeometry(x, y, w, h);
 253 #endif
 254         }
 255         view->setFocus();
 256
 257         setCurrentView(*view);
 258 }
 259
 260
 261
 262
 263 Clipboard & GuiApplication::clipboard()
 264 {
 265         return clipboard_;
 266 }
 267
 268
 269 Selection & GuiApplication::selection()
 270 {
 271         return selection_;
 272 }
 273
 274
 275 int GuiApplication::exec()
 276 {
 277         QTimer::singleShot(1, this, SLOT(execBatchCommands()));
 278         return QApplication::exec();
 279 }
 280
 281
 282 void GuiApplication::exit(int status)
 283 {
 284         QApplication::exit(status);
 285 }
 286
 287
 288 void GuiApplication::execBatchCommands()
 289 {
 290         LyX::ref().execBatchCommands();
 291 }
 292
 293
 294 QString const GuiApplication::romanFontName()
 295 {
 296         QFont font;
 297         font.setKerning(false);
 298         font.setStyleHint(QFont::Serif);
 299         font.setFamily("serif");
 300
 301         return QFontInfo(font).family();
 302 }
 303
 304
 305 QString const GuiApplication::sansFontName()
 306 {
 307         QFont font;
 308         font.setKerning(false);
 309         font.setStyleHint(QFont::SansSerif);
 310         font.setFamily("sans");
 311
 312         return QFontInfo(font).family();
 313 }
 314
 315
 316 QString const GuiApplication::typewriterFontName()
 317 {
 318         QFont font;
 319         font.setKerning(false);
 320         font.setStyleHint(QFont::TypeWriter);
 321         font.setFamily("monospace");
 322
 323         return QFontInfo(font).family();
 324 }
 325
 326
 327 bool GuiApplication::event(QEvent * e)
 328 {
 329         switch(e->type()) {
 330         case QEvent::FileOpen: {
 331                 // Open a file; this happens only on Mac OS X for now
 332                 QFileOpenEvent * foe = static_cast<QFileOpenEvent *>(e);
 333
 334                 if (!current_view_ || !current_view_->view())
 335                         // The application is not properly initialized yet.
 336                         // So we acknowledge the event and delay the file opening
 337                         // until LyX is ready.
 338                         // FIXME UNICODE: FileName accept an utf8 encoded string.
 339                         LyX::ref().addFileToLoad(FileName(fromqstr(foe->file())));
 340                 else
 341                         lyx::dispatch(FuncRequest(LFUN_FILE_OPEN,
 342                                 qstring_to_ucs4(foe->file())));
 343
 344                 e->accept();
 345                 return true;
 346         }
 347         default:
 348                 return QApplication::event(e);
 349         }
 350 }
 351
 352
 353 bool GuiApplication::notify(QObject * receiver, QEvent * event)
 354 {
 355         try {
 356                 return QApplication::notify(receiver, event);
 357         }
 358         catch (support::ExceptionMessage const & e) {
 359                 if (e.type_ == support::ErrorException) {
 360                         Alert::error(e.title_, e.details_);
 361                         LyX::cref().emergencyCleanup();
 362                         QApplication::exit(1);
 363                 } else if (e.type_ == support::WarningException) {
 364                         Alert::warning(e.title_, e.details_);
 365                         return false;
 366                 }
 367         }
 368         catch (std::exception const & e) {
 369                 docstring s = _("LyX has caught an exception, it will now "
 370                         "attemp to save all unsaved documents and exit."
 371                         "\n\nException: ");
 372                 s += from_ascii(e.what());
 373                 Alert::error(_("Software exception Detected"), s);
 374                 LyX::cref().emergencyCleanup();
 375                 QApplication::exit(1);
 376         }
 377         catch (...) {
 378                 docstring s = _("LyX has caught some really weird exception, it will "
 379                         "now attemp to save all unsaved documents and exit.");
 380                 Alert::error(_("Software exception Detected"), s);
 381                 LyX::cref().emergencyCleanup();
 382                 QApplication::exit(1);
 383         }
 384
 385         return false;
 386 }
 387
 388
 389 bool GuiApplication::getRgbColor(ColorCode col, RGBColor & rgbcol)
 390 {
 391         QColor const & qcol = color_cache_.get(col);
 392         if (!qcol.isValid()) {
 393                 rgbcol.r = 0;
 394                 rgbcol.g = 0;
 395                 rgbcol.b = 0;
 396                 return false;
 397         }
 398         rgbcol.r = qcol.red();
 399         rgbcol.g = qcol.green();
 400         rgbcol.b = qcol.blue();
 401         return true;
 402 }
 403
 404
 405 string const GuiApplication::hexName(ColorCode col)
 406 {
 407         return support::ltrim(fromqstr(color_cache_.get(col).name()), "#");
 408 }
 409
 410
 411 void GuiApplication::updateColor(ColorCode)
 412 {
 413         // FIXME: Bleh, can't we just clear them all at once ?
 414         color_cache_.clear();
 415 }
 416
 417
 418 void GuiApplication::registerSocketCallback(int fd, SocketCallback func)
 419 {
 420         SocketNotifier * sn = new SocketNotifier(this, fd, func);
 421         socket_notifiers_[fd] = sn;
 422         connect(sn, SIGNAL(activated(int)), this, SLOT(socketDataReceived(int)));
 423 }
 424
 425
 426 void GuiApplication::socketDataReceived(int fd)
 427 {
 428         socket_notifiers_[fd]->func_();
 429 }
 430
 431
 432 void GuiApplication::unregisterSocketCallback(int fd)
 433 {
 434         socket_notifiers_.erase(fd);
 435 }
 436
 437
 438 void GuiApplication::commitData(QSessionManager & sm)
 439 {
 440         /// The implementation is required to avoid an application exit
 441         /// when session state save is triggered by session manager.
 442         /// The default implementation sends a close event to all
 443         /// visible top level widgets when session managment allows
 444         /// interaction.
 445         /// We are changing that to write all unsaved buffers...
 446         if (sm.allowsInteraction() && !theBufferList().quitWriteAll())
 447                 sm.cancel();
 448 }
 449
 450
 451 void GuiApplication::addMenuTranslator()
 452 {
 453         installTranslator(new MenuTranslator(this));
 454 }
 455
 456
 457 bool GuiApplication::unregisterView(int id)
 458 {
 459         updateIds(views_, view_ids_);
 460         BOOST_ASSERT(views_.find(id) != views_.end());
 461         BOOST_ASSERT(views_[id]);
 462
 463         map<int, GuiView *>::iterator it;
 464         for (it = views_.begin(); it != views_.end(); ++it) {
 465                 if (it->first == id) {
 466                         views_.erase(id);
 467                         break;
 468                 }
 469         }
 470         updateIds(views_, view_ids_);
 471         return true;
 472 }
 473
 474
 475 bool GuiApplication::closeAllViews()
 476 {
 477         updateIds(views_, view_ids_);
 478         if (views_.empty()) {
 479                 // quit in CloseEvent will not be triggert
 480                 qApp->quit();
 481                 return true;
 482         }
 483
 484         map<int, GuiView*> const cmap = views_;
 485         map<int, GuiView*>::const_iterator it;
 486         for (it = cmap.begin(); it != cmap.end(); ++it) {
 487                 // TODO: return false when close event was ignored
 488                 //       e.g. quitWriteAll()->'Cancel'
 489                 //       maybe we need something like 'bool closeView()'
 490                 it->second->close();
 491                 // unregisterd by the CloseEvent
 492         }
 493
 494         views_.clear();
 495         view_ids_.clear();
 496         return true;
 497 }
 498
 499
 500 GuiView & GuiApplication::view(int id) const
 501 {
 502         BOOST_ASSERT(views_.find(id) != views_.end());
 503         return *views_.find(id)->second;
 504 }
 505
 506
 507 void GuiApplication::hideDialogs(string const & name, Inset * inset) const
 508 {
 509         vector<int>::const_iterator it = view_ids_.begin();
 510         vector<int>::const_iterator const end = view_ids_.end();
 511         for (; it != end; ++it)
 512                 view(*it).hideDialog(name, inset);
 513 }
 514
 515
 516 Buffer const * GuiApplication::updateInset(Inset const * inset) const
 517 {
 518         Buffer const * buffer_ = 0;
 519         vector<int>::const_iterator it = view_ids_.begin();
 520         vector<int>::const_iterator const end = view_ids_.end();
 521         for (; it != end; ++it) {
 522                 Buffer const * ptr = view(*it).updateInset(inset);
 523                 if (ptr)
 524                         buffer_ = ptr;
 525         }
 526         return buffer_;
 527 }
 528
 529
 530 ////////////////////////////////////////////////////////////////////////
 531 // X11 specific stuff goes here...
 532 #ifdef Q_WS_X11
 533 bool GuiApplication::x11EventFilter(XEvent * xev)
 534 {
 535         if (!current_view_)
 536                 return false;
 537
 538         switch (xev->type) {
 539         case SelectionRequest: {
 540                 if (xev->xselectionrequest.selection != XA_PRIMARY)
 541                         break;
 542                 LYXERR(Debug::GUI, "X requested selection.");
 543                 BufferView * bv = current_view_->view();
 544                 if (bv) {
 545                         docstring const sel = bv->requestSelection();
 546                         if (!sel.empty())
 547                                 selection_.put(sel);
 548                 }
 549                 break;
 550         }
 551         case SelectionClear: {
 552                 if (xev->xselectionclear.selection != XA_PRIMARY)
 553                         break;
 554                 LYXERR(Debug::GUI, "Lost selection.");
 555                 BufferView * bv = current_view_->view();
 556                 if (bv)
 557                         bv->clearSelection();
 558                 break;
 559         }
 560         }
 561         return false;
 562 }
 563 #endif
 564
 565 } // namespace frontend
 566
 567
 568 ////////////////////////////////////////////////////////////////////
 569 //
 570 // Font stuff
 571 //
 572 ////////////////////////////////////////////////////////////////////
 573
 574 frontend::FontLoader & theFontLoader()
 575 {
 576         static frontend::NoGuiFontLoader no_gui_font_loader;
 577
 578         if (!use_gui)
 579                 return no_gui_font_loader;
 580
 581         BOOST_ASSERT(frontend::guiApp);
 582         return frontend::guiApp->fontLoader();
 583 }
 584
 585
 586 frontend::FontMetrics const & theFontMetrics(Font const & f)
 587 {
 588         return theFontMetrics(f.fontInfo());
 589 }
 590
 591
 592 frontend::FontMetrics const & theFontMetrics(FontInfo const & f)
 593 {
 594         static frontend::NoGuiFontMetrics no_gui_font_metrics;
 595
 596         if (!use_gui)
 597                 return no_gui_font_metrics;
 598
 599         BOOST_ASSERT(frontend::guiApp);
 600         return frontend::guiApp->fontLoader().metrics(f);
 601 }
 602
 603
 604 frontend::Clipboard & theClipboard()
 605 {
 606         BOOST_ASSERT(frontend::guiApp);
 607         return frontend::guiApp->clipboard();
 608 }
 609
 610
 611 frontend::Selection & theSelection()
 612 {
 613         BOOST_ASSERT(frontend::guiApp);
 614         return frontend::guiApp->selection();
 615 }
 616
 617 } // namespace lyx
 618
 619 #include "GuiApplication_moc.cpp"